21227280

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{241}}^1\times {\mathrm{367}}^1$

素因数の和:624

約数の個数: 80

約数和(自身を含む): 66257664

約数和(自身を除く): 45030384

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 241, 367, 482, 723, 734, 964, 1101, 1205, 1446, 1468, 1835, 1928, 2202, 2410, 2892, 2936, 3615, 3670, 3856, 4404, 4820, 5505, 5784, 5872, 7230, 7340, 8808, 9640, 11010, 11568, 14460, 14680, 17616, 19280, 22020, 28920, 29360, 44040, 57840, 88080, 88447, 176894, 265341, 353788, 442235, 530682, 707576, 884470, 1061364, 1326705, 1415152, 1768940, 2122728, 2653410, 3537880, 4245456, 5306820, 7075760, 10613640, 21227280]

約数ペア:

[(1, 21227280), (2, 10613640), (3, 7075760), (4, 5306820), (5, 4245456), (6, 3537880), (8, 2653410), (10, 2122728), (12, 1768940), (15, 1415152), (16, 1326705), (20, 1061364), (24, 884470), (30, 707576), (40, 530682), (48, 442235), (60, 353788), (80, 265341), (120, 176894), (240, 88447), (241, 88080), (367, 57840), (482, 44040), (723, 29360), (734, 28920), (964, 22020), (1101, 19280), (1205, 17616), (1446, 14680), (1468, 14460), (1835, 11568), (1928, 11010), (2202, 9640), (2410, 8808), (2892, 7340), (2936, 7230), (3615, 5872), (3670, 5784), (3856, 5505), (4404, 4820)]